From bfcc52b4f5d98468a5993daa0bf0e4fb3f3ed698 Mon Sep 17 00:00:00 2001
From: Henry Mercer <henrymercer@github.com>
Date: Wed, 9 Sep 2026 12:57:40 +0100
Subject: [PATCH] Run slow macOS checks on larger runners

Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>
---
 .github/workflows/__all-platform-bundle.yml | 2 +-
 .github/workflows/__swift-custom-build.yml  | 6 +++---
 pr-checks/checks/all-platform-bundle.yml    | 3 ++-
 pr-checks/checks/swift-custom-build.yml     | 3 ++-
 4 files changed, 8 insertions(+), 6 deletions(-)

diff --git a/.github/workflows/__all-platform-bundle.yml b/.github/workflows/__all-platform-bundle.yml
index c3cf8d63f3..4846d13f1e 100644
--- a/.github/workflows/__all-platform-bundle.yml
+++ b/.github/workflows/__all-platform-bundle.yml
@@ -56,7 +56,7 @@ jobs:
         include:
           - os: ubuntu-latest
             version: nightly-latest
-          - os: macos-latest
+          - os: macos-latest-xlarge
             version: nightly-latest
           - os: windows-latest
             version: nightly-latest
diff --git a/.github/workflows/__swift-custom-build.yml b/.github/workflows/__swift-custom-build.yml
index 99fbf7a897..000b681eb4 100644
--- a/.github/workflows/__swift-custom-build.yml
+++ b/.github/workflows/__swift-custom-build.yml
@@ -54,11 +54,11 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - os: macos-latest
+          - os: macos-latest-xlarge
             version: linked
-          - os: macos-latest
+          - os: macos-latest-xlarge
             version: default
-          - os: macos-latest
+          - os: macos-latest-xlarge
             version: nightly-latest
     name: Swift analysis using a custom build command
     if: github.triggering_actor != 'dependabot[bot]'
diff --git a/pr-checks/checks/all-platform-bundle.yml b/pr-checks/checks/all-platform-bundle.yml
index d35620706f..a13ba7cdee 100644
--- a/pr-checks/checks/all-platform-bundle.yml
+++ b/pr-checks/checks/all-platform-bundle.yml
@@ -2,7 +2,8 @@ name: "All-platform bundle"
 description: "Tests using an all-platform CodeQL Bundle"
 operatingSystems:
   - ubuntu
-  - macos
+  - os: macos
+    runner-image: macos-latest-xlarge
   - windows
 versions:
   - nightly-latest
diff --git a/pr-checks/checks/swift-custom-build.yml b/pr-checks/checks/swift-custom-build.yml
index a2d04421b8..53131b1aef 100644
--- a/pr-checks/checks/swift-custom-build.yml
+++ b/pr-checks/checks/swift-custom-build.yml
@@ -5,7 +5,8 @@ versions:
   - default
   - nightly-latest
 operatingSystems:
-  - macos
+  - os: macos
+    runner-image: macos-latest-xlarge
 installGo: true
 installDotNet: true
 env: